Haitham Khouri

Fuse is an electrical element that is used to break the circuit in abnormal conditions. Fuse is basically a wire means a wire that has low melting point is called fuse. There are many circuit breakers that is used to break the circuit but fuse is very simple and cheap circuit breaker. Fuse is used in home wiring and many home appliances. It can be easily replaceable. The concept behind fuse is that when a current more than particular limit of that wire (fuse) is passed through fuse, Fuse melts and circuit breaks.

Synchroscope is used to determine the right instant at which the switch connecting alternator and power station busbars should be closed. this synchronizing process is very cruicial while connecting a new alternator with bus in order to share the load. there are follwing criterias for correct synchronizing which are as follows busbar and incoming machine should have same voltage magnitude. should be in phase. should have same frequency. phase sequence should also be same. The main function of synchroscope is to  show difference  in  phase  and  frequency  of voltages of busbar and the machine which is to be connected. Electro-dynamometer type : It has three limbed transformer one of outer limb is excited by busbar second outer limb is excited by alternator to be connected and the central limb is connected with a lamp.The resultant flux through the central limb is the phasor sum of the fluxes of two outer limbs. The outer ;imb winding are so...